3972123680 has 48 divisors (see below), whose sum is σ = 10724736960. Its totient is φ = 1361870592.

The previous prime is 3972123677. The next prime is 3972123703. The reversal of 3972123680 is 863212793.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1772150 + ... + 1774389.

It is an arithmetic number, because the mean of its divisors is an integer number (223432020).

Almost surely, 2^3972123680 is an apocalyptic number.

It is an amenable number.

3972123680 is an abundant number, since it is smaller than the sum of its proper divisors (6752613280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3972123680 is a wasteful number, since it uses less digits than its factorization.

3972123680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546561 (or 3546553 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 3972123680 is about 63024.7862352583. The cubic root of 3972123680 is about 1583.7048773375.

The spelling of 3972123680 in words is "three billion, nine hundred seventy-two million, one hundred twenty-three thousand, six hundred eighty".